Fan heater



FIG. 1 is a front perspective view of a fan heater showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front perspective view of a fan heater showing a second embodiment of my new design; and

FIG. 4 is a rear perspective view of FIG. 3. 

The ornamental design for a fan heater, as shown and described. 